In random samples of 12 from each tow normal population, we found the following statistics:
x1‾ = 74 s1 = 18
x2 = 71 s2 = 16
a) Test with alpha = .05 to determine whether we can infer that the population means differ
b) Repeat Part a increasing the standard deviation to s1 = 210 and s2 = 198.
c) Describe what happens when the sample standard deviations get larger.
d) Repeat Part a with samples of size 150.
e) Discuss the effects of increasing the sample size.
f) Repeat Part a, changing the mean of sample 1 to x1 = 76.
g) Discuss the effect of increasing x1.